Certified A/C Pro Car Air Conditioner Test Thermometer, Helps Diagnose AC Performace and Checks Outlet Duct Temperature and Ambient Temperature, Includes Holder and Clip, InterDynamics

I'm really pleased with this automotive thermometer that I use for checking my work when I repair automotive AC systems. It's pretty self-explanatory with how it works but you just stick it in whichever vent is blowing air to see the temperature of the air. I just reference google to see what the AC temp should be when I start refilling the system with refrigerant. This could also be used in residential HVAC systems. I prefer this style thermometer over a laser thermometer because these are more accurate and it's easy to get an incorrect reading with a laser thermometer. This thermometer was a great value and is a must for any mechanic.

We received them in good condition and on time! We bought several to check temperatures in all of our refrigerators and freezers. They work well. They will help us to know if the temperatures deviate from normal.

Cool little thermometer. A little hard for me to read due to my eyesight.

It works fine as a thermometer and is accurate. However as others have echoed the dial is extremely small and hard to read, even with the magnified lens over it!!

works nice, lets me know the true temp of my car on the inside

A quick, inexpensive tool to test temperatures in HVAC systems. It's a handy pocket tool to take quick temperature readings in HVAC outlets, automotive A/C, and kitchen refrigeration equipment.

excellent thermometer.check calibration.mine was off ten degrees

Works as advertized. The green highlighted section on the dial helps me see if the dial is in the area a little better since the numbers are fairly small.